CN102141702A - Backlight apparatus and display apparatus including the same - Google Patents
Backlight apparatus and display apparatus including the same Download PDFInfo
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- CN102141702A CN102141702A CN2011100018571A CN201110001857A CN102141702A CN 102141702 A CN102141702 A CN 102141702A CN 2011100018571 A CN2011100018571 A CN 2011100018571A CN 201110001857 A CN201110001857 A CN 201110001857A CN 102141702 A CN102141702 A CN 102141702A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/009—Positioning aspects of the light source in the package
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/115—Via connections; Lands around holes or via connections
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/03—Conductive materials
- H05K2201/0332—Structure of the conductor
- H05K2201/0388—Other aspects of conductors
- H05K2201/0397—Tab
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10106—Light emitting diode [LED]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10189—Non-printed connector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The present invention provides a backlight apparatus and a display apparatus including the same. The backlight apparatus includes a substrate which includes a plurality of layers. A plurality of light emitting modules are arranged on a top layer of the plurality of layers closest to a light guide panel, and a plurality of wires penetrates through the plurality of layers to electrically connect the light emitting modules and a plurality of driving units. Accordingly, the width of the substrate of an edge type backlight apparatus which can provide local dimming is reduced. Therefore, the display apparatus using the edge type backlight apparatus can be slim even if it is designed to provide local dimming.
Description
Technical field
The display device that the present invention relates to back lighting device and comprise this back lighting device, more specifically, relating to supply can provide the peripheral type back lighting device backlight of local dimming (local dimming) and the display device that comprises this back lighting device.
Background technology
The display panels self of liquid crystal display (LCD) equipment can not be luminous, therefore need be to the luminous back lighting device of LCD panel.
Back lighting device can be divided into direct type and peripheral type according to the position at light-emitting component place.Directly the type back lighting device has the light-emitting component on the whole back side that is arranged in the LCD panel equably, thereby light-emitting component is directly luminous to the LCD panel.On the other hand, the peripheral type back lighting device has along the light-emitting component of one or more edge placement of LCD panel and uses light guide plate will reflex to the back side of LCD panel from the light that send the side of LCD panel.
Because in direct type back lighting device light-emitting component be arranged on the back side of LCD panel and in the peripheral type back lighting device light-emitting component only along the edge placement of LCD panel, so directly the type back lighting device has the thickness bigger than peripheral type back lighting device.
The consumer expects to use slim display device.Therefore, the display device that needs to use the peripheral type back lighting device and local dimming is provided.
Summary of the invention
One exemplary embodiment has overcome above-mentioned shortcoming and above other shortcomings of not describing.Yet, should be appreciated that the design of one exemplary embodiment does not need to overcome above-mentioned shortcoming, and one exemplary embodiment can not overcome above-mentioned any problem.
One exemplary embodiment provides a kind of peripheral type back lighting device, and the display device that the backlight of local dimming can be provided and comprise this back lighting device also is provided.
An aspect according to one exemplary embodiment provides a kind of display device, comprising: display panel; And back light unit, provide light to display panel.Back light unit comprises: a plurality of light emitting modules (lightemitting module); Driver element drives a plurality of light emitting modules; Substrate comprises a plurality of layer, and wherein light emitting module is arranged on the top layer in a plurality of layers, and many distributions penetrate a plurality of layers to be electrically connected a plurality of light emitting modules and driver element; And underframe, the place, end at display panel holds light emitting module and substrate.
Back light unit can comprise a plurality of light-emitting blocks (light emitting block), each light-emitting block comprise in a plurality of light emitting modules one of at least, and at least one distribution is arranged in each layer of substrate and is connected at least one light-emitting block.
All light emitting modules that are included in each light-emitting block are connected to identical distribution.
The quantity of the layer of substrate can equal the quantity of light-emitting block.
At least one driver element can be a plurality of driver elements, and the quantity of driver element can equal the quantity of light-emitting block with difference driven for emitting lights piece.
Back light unit can comprise a plurality of light-emitting blocks, each light-emitting block comprise in a plurality of light emitting modules one of at least, and at least one driver element can be a plurality of driver elements, the quantity of light-emitting block can be corresponding to the quantity of driver element, and the quantity of the layer of substrate can be less than or equal the quantity of driver element.
A plurality of layers of substrate are connected to each other by at least one via hole (via hole).
A plurality of driver elements can be with different luminance level driven for emitting lights modules.
Each of a plurality of light emitting modules can comprise at least one light emitting diode (LED), and light emitting module can be along the edge setting at the underframe of the end of display panel.
An aspect according to another one exemplary embodiment provides a kind of back lighting device, comprising: a plurality of light emitting modules; Driver element drives a plurality of light emitting modules independently; Substrate comprises a plurality of layer, and wherein light emitting module is arranged on the top layer in a plurality of layers, and many distributions penetrate a plurality of layers to be electrically connected a plurality of light emitting modules and at least one driver element; And underframe, the place, end at display panel holds light emitting module and substrate.
Back lighting device can comprise a plurality of light-emitting blocks, each light-emitting block comprise a plurality of light emitting modules one of at least, and at least one distribution can be arranged in each layer of substrate to be connected at least one light-emitting block.
All light emitting modules that are included in each of light-emitting block can be connected to identical distribution.
The quantity of the layer of substrate can be corresponding to the quantity of light-emitting block.
At least one driver element can be a plurality of driver elements, and the quantity of driver element can equal the quantity of light-emitting block with difference driven for emitting lights piece.
Back light unit can comprise a plurality of light-emitting blocks, each light-emitting block comprise in a plurality of light emitting modules one of at least, and the quantity of light-emitting block can be corresponding to the quantity of driver element, and the quantity of the layer of substrate can be less than or equal the quantity of driver element.
A plurality of layers of substrate are connected to each other by at least one via hole.
A plurality of driver elements can be with different luminance level driven for emitting lights modules.
Each of a plurality of light emitting modules can comprise at least one light emitting diode (LED), and light emitting module can be along the edge setting of underframe.
Other aspect and advantage will be set forth in detailed explanation, and become from these detailed explanations and to become apparent, and perhaps can be understanded by putting into practice these one exemplary embodiment.
Description of drawings
Describe one exemplary embodiment in detail by the reference accompanying drawing, above-mentioned and/or other aspects will be more obvious, in the accompanying drawings:
Fig. 1 is the block scheme that illustrates according to the LCD equipment of one exemplary embodiment;
Fig. 2 A is the front elevation (elevationview) that illustrates according to the peripheral type back lighting device of one exemplary embodiment;
Fig. 2 B is the side view of the peripheral type back lighting device of Fig. 2 A;
Fig. 2 C is the block scheme that the peripheral type back lighting device of Fig. 2 A is shown;
Fig. 3 A illustrates the skeleton view that uses the peripheral type back lighting device of three laminar substrates according to one exemplary embodiment;
Fig. 3 B is the view that the ground floor in three laminar substrates of Fig. 3 A is shown;
Fig. 3 C is the view that the second layer in three laminar substrates of Fig. 3 A is shown;
Fig. 3 D is the 3rd layer the view that illustrates in three laminar substrates of Fig. 3 A;
Fig. 3 E is the front view that illustrates when use the peripheral type back lighting device of three laminar substrates when direction is seen from " y ";
Fig. 3 F is the side view that illustrates when see the peripheral type back lighting device that is to use three laminar substrates from " x " direction;
Fig. 4 A illustrates the skeleton view that uses the peripheral type back lighting device of two-layer substrate according to another one exemplary embodiment;
Fig. 4 B is the view that the ground floor in the two-layer substrate of Fig. 4 A is shown;
Fig. 4 C is the view that the second layer in the two-layer substrate of Fig. 4 A is shown;
Fig. 4 D is the front view that illustrates when use the peripheral type back lighting device of two-layer substrate when direction is seen from " y ";
Fig. 4 E is the side view that illustrates when use the peripheral type back lighting device of two-layer substrate when direction is seen from " x "; And
Fig. 5 A and Fig. 5 B are the views that illustrates according to the connector of one exemplary embodiment.
Embodiment
Hereinafter, one exemplary embodiment is described with reference to the accompanying drawings in more detail.
In the following description, when identical Reference numeral shown in the different accompanying drawings time, they are used for components identical.Furnish an explanation things (such as detailed construction and element) defined in the book with auxiliary complete understanding to one exemplary embodiment.Therefore, obviously under the situation that does not have those concrete things that limit, can implement one exemplary embodiment.In addition, do not describe function known in the prior art or element in detail, because they will make one exemplary embodiment fuzzy with unnecessary details.
Fig. 1 is the block scheme that illustrates according to the LCD equipment 100 of one exemplary embodiment.As shown in Figure 1, LCD equipment 100 comprises video input block 110, video processing unit 120, back light unit 130 and LCD panel 140.
The video that video input block 110 is accepted from broadcasting station, cable or external unit.For example, video input block 110 can be the tuner by air or cable receiving broadcast signal, perhaps can be to be connected to external unit or to be connected to the interface of external system with receiver, video.Video input block 110 is transferred to video processing unit 120 with input video.
The brightness control signal that back light unit 130 receives from video processing unit 120, and driven for emitting lights unit 210 sends backlight to LCD panel 140.Back light unit 130 can be that the light emitting diode (LED) of peripheral type is backlight.Peripheral type LED-backlit as used herein is meant the back light unit 130 with the luminescence unit 210 that is provided with along the edge of back light unit 130.In an exemplary embodiment, luminescence unit 210 is along the edge setting at the underframe of the lower end of LCD panel 140.
Permeability backlight that back light units 130 produce adjusted by LCD panel 140 so that as seen vision signal, and shows input video on screen.LCD panel 140 comprises two substrates that are furnished with electrode that face with each other, and forms by inject liquid crystal material between these two substrates.If voltage is applied to two substrates, then produces electric field with the mobile molecule that is infused in two liquid crystal materials between the substrate, thereby adjust the permeability backlight of LCD panel 140.
Hereinafter, with reference to the detailed back light unit of explaining as back lighting device 130 of Fig. 2 A to Fig. 2 C.
Shown in Fig. 2 A to Fig. 2 C, back light unit 130 comprises substrate 200, luminescence unit 210, driver element 220 and light guide plate 270.
Fig. 2 A is the front elevation that illustrates according to the peripheral type back light unit 130 of one exemplary embodiment.Shown in Fig. 2 A, in peripheral type back light unit 130, the substrate 200 that is furnished with luminescence unit 210 is arranged on the upper surface and lower surface of light guide plate 270.Light guide plate 270 be used for will from the even back of luminescence unit 210 emission be transferred to LCD panel 140.More specifically, enter light guide plate 270 and scattering and be reflected to LCD panel 140 light guide plate 270 from luminescence unit 210 emission backlight.
Fig. 2 B is the side view of peripheral type back light unit 130.Shown in Fig. 2 B, luminescence unit 210 is arranged on the surface of substrate 200, in the face of light guide plate 270.LCD panel 140 is positioned on the upper surface of light guide plate 270, and this upper surface is perpendicular to the surface in the face of luminescence unit 210 of light guide plate 270.Luminescence unit 210 is with the side surface of backlight illumination to light guide plate 270.Backlightly be directed to LCD panel 140 by light guide plate 270.In addition, light guide plate 270 and LCD panel 140 are supported by protecgulum 280.
In addition, it is following to hold luminescence unit 210 and substrate 200 that underframe 290 is provided at LCD panel 140.Just, underframe 290 supports LCD panel 140 and the substrate 200 that is furnished with luminescence unit 210.
Fig. 2 C is the block scheme that illustrates according to the peripheral type back light unit 130 of one exemplary embodiment.
For example, if three light-emitting blocks 251,253,255 are arranged, then luminescence unit 210 controls feasible three zones corresponding to three light-emitting blocks 251,253,255 backlight have different brightness values.Therefore, need three driver elements 220.Just, if three light-emitting blocks 251,253,255 are provided, luminescence unit 210 provides with respect to trizonal local dimming so.
In addition, be included at least one light emitting module 211-216 in the light-emitting block 251,253,255 of luminescence unit 210 and be connected to distribution 310 in the identical layer 201 that is arranged in a plurality of layers 201,202,203.Because the light emitting module 211-216 of a light-emitting block 251,253,255 is driven simultaneously, so all light emitting module 211-216 of this light-emitting block 251,253,255 are connected to a driver element 220.
Describe a plurality of light emitting module 211-216 and a plurality of light-emitting block 251,253,255 of luminescence unit 210 in detail hereinafter with reference to Fig. 3 A.
A plurality of driver elements 220 drive different light emitting module 211-216 so that local dimming to be provided.A plurality of light-emitting blocks 251,253,255 are driven individually, and the quantity of driver element 220 equals the quantity of light-emitting block 251,253,255.A plurality of driver elements 220 drive different light emitting module 211-216 so that local dimming to be provided with different luminance levels.
In addition, the quantity of driver element 220 can equal the quantity of the layer 201,202,203 of the quantity of light-emitting block 251,253,255 and substrate 200.In the case, distribution 310,320 or 330 is arranged in each layer in a plurality of layers 201,202 or 203 so that one of light-emitting block 251,253,255 is connected to a driver element 220.This situation is shown in Fig. 3 A to Fig. 3 D.
As mentioned above, the quantity of driver element 220 can be corresponding to the quantity of light-emitting block 251,253,255.
Yet a driver element 220 can drive a plurality of light-emitting blocks 251,253,255.In the case, a plurality of light-emitting block 251,253,255 is driven together by a driver element 220.In this one exemplary embodiment, the sum of driver element is less than the sum of light-emitting block 251,253,255.
In addition, the quantity of driver element 220 can equal the quantity of light-emitting block 251,253,255 and the quantity of the layer 201,202,203 of substrate 220 can be less than the quantity of driver element 220.In the case, many distributions 320,330 can be arranged in the layer 202.This situation is shown in Fig. 4 A to Fig. 4 C.
As mentioned above, a plurality of driver elements 220 use multilager base plate 200 to be connected to a plurality of light-emitting blocks 251,253,255, make substrate 200 can have the width that reduces.Therefore, even the peripheral type back lighting device is supported local dimming, this peripheral type back lighting device also can be slim.
Hereinafter, explain back light unit 130 with reference to Fig. 3 A to Fig. 3 D, back light unit 130 has three laminar substrates 200, comprises luminescence unit 210 and three driver elements 220 of three light-emitting blocks 251,253,255.
Fig. 3 A is the skeleton view that illustrates according to the peripheral type back lighting device of use three laminar substrates 200 of one exemplary embodiment.Fig. 3 B is the view of ground floor 201 that three laminar substrates 200 of Fig. 3 A are shown.
As shown in Figure 3A, back lighting device or back light unit 130 comprise three laminar substrates 200, have luminescence unit 210 and three driver elements 220 of three light-emitting blocks.
More specifically, substrate 200 comprises ground floor 201, the second layer 202 and the 3rd layer 203.Ground floor 201 as substrate 200 top layers of the most close light guide plate 270 has six light emitting module 211-216 disposed thereon.
Shown in Fig. 3 B, connector 350 is arranged on the ground floor 201 of substrate 200 to be connected to driver element 220.More specifically, connector 350 comprises first connector 351, second connector 352 and the 3rd connector 353.First connector 351 is connected to first light-emitting block, 251, the second connectors 352 with first driver element 221 and second driver element 222 is connected to second light-emitting block, 253, the three connectors 353 the 3rd driver element 223 is connected to the 3rd light-emitting block 255.
More specifically, first connector 351 is connected to first light emitting module 211 and second light emitting module 212 of first light-emitting block 251 by being arranged in first distribution 310 in the ground floor 201.
In addition, second connector 352 is connected to the 3rd light emitting module 213 and the 4th reflective module 214 of second light-emitting block 253 by second distribution 320, first via hole 323 and the alternate path hole 326 that is arranged in ground floor 201.First via hole 323 and alternate path hole 326 are connected to the second layer 202 and are connected to each other by second distribution 320 that is arranged in the second layer 202.Just, second distribution 320 extend to first via hole 323 along ground floor 201 from second connector 252, extend to alternate path hole 326 along the second layer 202 from first via hole 323 and extend to the 3rd light emitting module 213 and the 4th light emitting module 214 along ground floor 201 from alternate path hole 326 each.
Fig. 3 C is the view that the second layer 202 of three laminar substrates 200 is shown.Shown in Fig. 3 C, first via hole 323 and alternate path hole 326 are connected to each other by second distribution 320 that is arranged in the second layer 202.
Refer back to Fig. 3 B, the 3rd connector 353 is connected to the 5th light emitting module 215 and the 6th light emitting module 216 of the 3rd light-emitting block 255 by the 3rd distribution 330, the 3rd via hole 333 and the 4th via hole 336 that is arranged in ground floor 201.The 3rd via hole 333 and the 4th via hole 336 are connected to the 3rd layer 203 and are connected to each other by the 3rd distribution 330 that is arranged in the 3rd layer 203.Just, the 3rd distribution 330 extend to the 3rd via hole 333 along ground floor 201 from the 3rd connector 353, extend to the 4th via hole 336 along the second layer 202 from the 3rd via hole 333 and extend to the 5th light emitting module 215 and the 6th light emitting module 216 along ground floor 201 from the 4th via hole 336 each.
Fig. 3 D is the 3rd layer 203 the view that three laminar substrates 200 are shown.Shown in Fig. 3 D, the 3rd via hole 333 and the 4th via hole 336 are connected to each other by the 3rd distribution 330 that is arranged in the 3rd layer 203.
As mentioned above, first driver element 221 is connected to first light-emitting block 251 by first distribution 310 that is arranged in ground floor 201, second driver element 222 by be arranged on ground floor 201 and the second layer 202 and second distribution 320 that on the second layer 202 first via hole 323 is connected with alternate path hole 326 be connected to second light-emitting block, 253, the three driver elements 223 by be arranged in ground floor 211 with the 3rd layer 203 on and the 3rd distribution 330 that on the 3rd layer 203, the 3rd via hole 333 is connected with the 4th via hole 336 be connected to the 3rd light-emitting block 255.
The back light unit 130 that comprises three light-emitting blocks 251,253,255 as mentioned above can be adjusted trizonal brightness independently, thereby local dimming is provided.The use of three laminar substrates 200 can make substrate 200 keep identical width with the back lighting device of not supporting local dimming.Therefore, by using multilager base plate 200, the width of the back light unit 130 that local dimming is provided is reduced.
Fig. 3 E illustrates when from " y " front view of the peripheral type back lighting device of use three laminar substrates of Fig. 3 A when direction is seen.Fig. 3 F illustrates when from " x " side view of the peripheral type back lighting device of use three laminar substrates of Fig. 3 A when direction is seen.
Shown in Fig. 3 E and Fig. 3 F, first via hole 323 and alternate path hole 326 penetrate ground floor 201 and the top surface of ground floor 201 are connected to the top surface of the second layer 202, and the 3rd via hole 333 and the 4th via hole 336 penetrate ground floor 201 and the second layer 202 and the top surface of ground floor 201 is connected to the 3rd layer 203 top surface.
Fig. 3 A to 3F illustrates the back lighting device 300 that comprises the substrate 200 with three layers, the luminescence unit 210 that comprises three light-emitting blocks and three driver elements 220.Yet the number of plies of substrate 200 can be less than the quantity of light-emitting block and the quantity of driver element.This explains with reference to Fig. 4 A to Fig. 4 E.
Hereinafter, explain with reference to Fig. 4 A to 4E and comprise two-layer substrate 200, contain the luminescence unit 210 of three light-emitting blocks and the back lighting device 130 of three driver elements 220.
Fig. 4 A illustrates the skeleton view that uses the peripheral type back lighting device of two-layer substrate 200 according to one exemplary embodiment.Fig. 4 B is the view that the ground floor 201 of two-layer substrate 200 is shown.Because Fig. 4 A to Fig. 4 E is similar to Fig. 3 A to Fig. 3 F, therefore omit the explanation that repeats.
Shown in Fig. 4 A, back lighting device or back light unit 130 comprise two-layer substrate 200, contain luminescence unit 210 and three driver elements 220 of three light-emitting blocks.
Shown in Fig. 4 B, first connector 351 is connected to first light emitting module 211 and second light emitting module 212 of first light-emitting block 251 by first distribution 310 that is arranged in ground floor 201.
Fig. 4 C is the view that the second layer 202 of two-layer substrate 200 is shown.Shown in Fig. 4 C, first via hole 323 and alternate path hole 326 are connected to each other by second distribution 320 that is arranged in the second layer 202.
Return the B with reference to Fig. 4, the 3rd connector 353 is connected to the 5th light emitting module 215 and the 6th light emitting module 216 of the 3rd light-emitting block 255 by the 3rd distribution 330, the 3rd via hole 333 and the 4th via hole 336 that is arranged in ground floor 201.The 3rd via hole 333 and the 4th via hole 336 are connected to the second layer 203 and are connected to each other by the 3rd distribution 330 that is arranged in the second layer 203.Just, the 3rd distribution 330 extend to the 3rd via hole 333 along ground floor 201 from the 3rd connector 353, extend to the 4th via hole 336 along the second layer 202 from the 3rd via hole 333 and extend to the 5th light emitting module 215 and the 6th light emitting module 216 along ground floor 201 from the 4th via hole 336 each.
Shown in Fig. 4 C, the 3rd via hole 333 and the 4th via hole 336 are connected to each other by the 3rd distribution 330 that is arranged in the second layer 203.
As mentioned above, first driver element 221 is connected to first light-emitting block 251 by first distribution 310 that is arranged in ground floor 201, second driver element 222 is connected to the 3rd light-emitting block 255 by being arranged on ground floor 201 and the second layer 202 and being connected to second light-emitting block, 253, the three driver elements 223 at second distribution 320 that on the second layer 202 first via hole 323 is connected with alternate path hole 326 by the 3rd distribution 330 that is arranged on ground floor 201 and the second layer 202 and be connected the 3rd via hole 333 and the 4th via hole 336 on the second layer 202.
Fig. 4 D illustrates when from " y " front view of the peripheral type back lighting device of the use two-layer substrate shown in Fig. 4 A when direction is seen.Fig. 4 E illustrates when from " x " side view of the peripheral type back lighting device of the use two-layer substrate shown in Fig. 4 A when direction is seen.
Shown in Fig. 4 D and Fig. 4 E, first via hole 323 and alternate path hole 326 penetrate ground floor 201 and the top surface of ground floor 201 are connected to the top surface of the second layer 202, and the 3rd via hole 333 and the 4th via hole 336 penetrate ground floor 201 and the top surface of ground floor 201 is connected to the top surface of the second layer 202.
As mentioned above, comprise that the back light unit 130 of three light-emitting blocks 251,253,255 can be adjusted trizonal brightness independently, thereby local dimming is provided.The use of two-layer substrate 200 can make substrate 200 keep identical width with the back lighting device of not supporting local dimming.Just, from Fig. 4 A to Fig. 4 E as seen, the quantity of the layer 201,202,203 of substrate 200 can be less than the quantity of light emitting module 251,253,255 and the quantity of driver element 221,222,223.
By using aforesaid multilager base plate 200, can reduce to support the width of the back light unit 130 of local dimming, even therefore back lighting device 100 is supported local dimming, back lighting device 100 also can be slim.
Although connector 350 forms outstanding from ground floor 201 in Fig. 3 A to 4E, this only is an example.Connector 350 can be an Any shape, as long as it can be connected driver element 220 with light-emitting block 251,253,255.For example, connector 350 can have the shape shown in Fig. 5 A and 5B.
Fig. 5 A and Fig. 5 B are the views that illustrates according to the shape of the connector 350 of one exemplary embodiment.Fig. 5 A is the skeleton view that the substrate 200 that is furnished with U-shape connecting piece 350 is shown, and Fig. 5 B is the enlarged drawing of the connector 350 of Fig. 5 A.
Shown in Fig. 5 A and Fig. 5 B, connector 350 can be a grooved.The connector (not shown) of driver element 220 is inserted into the U-shape connecting piece 350 that is arranged on the substrate 200, makes driver element 220 be connected to light-emitting block 251,253,255 by connector 350.
Connector can have other shapes, and is not limited to the structure of above-mentioned one exemplary embodiment.
In addition, although substrate 200 has two-layer or three layers, this only is an example.According to the quantity of driver element and the quantity of light-emitting block, substrate 200 can comprise any amount of layer.
Display device is a LCD equipment in above-mentioned one exemplary embodiment, but this only is an example.One exemplary embodiment can be applied to any other display device that uses the peripheral type back lighting device.
According to aforesaid one exemplary embodiment, back lighting device 130 that comprises substrate 200 and the display device 100 that comprises this back lighting device 130 are provided, this substrate 200 comprises a plurality of layers and the luminescence unit 210 that is arranged on the top layer 201, wherein many distributions 310,320,330 are arranged in a plurality of layers 201,202,203, are used to be electrically connected a plurality of light emitting module 211-216 and a plurality of driver element 220.Therefore, can reduce the width of the substrate 200 that the peripheral type of local dimming back lighting device is provided.Therefore, even display device 100 uses the peripheral type back lighting devices and the function of the local dimming of providing is provided, it also can be slim.
Previous exemplary embodiment and advantage only are exemplary, and should not be regarded as restriction.This instruction can be easy to be applied to the equipment of other types.In addition, it is illustrative that the description of one exemplary embodiment is intended to, rather than the scope of restriction claim, and many replacements, modifications and variations are tangible for those skilled in the art.
The application requires to be submitted on January 6th, 2010 right of priority of the korean patent application No.10-2010-00887 of Korea S Department of Intellectual Property, and its disclosure integral body by reference is incorporated into this.
Claims (15)
1. display device comprises:
Display panel; And
Back light unit provides light to arrive described display panel,
Wherein said back light unit comprises:
A plurality of light emitting modules;
At least one driver element drives described a plurality of light emitting module;
Substrate comprises a plurality of layers, and wherein said light emitting module is arranged in the top layer in described a plurality of layer
On, and many distributions penetrate described a plurality of layer to be electrically connected described a plurality of light emitting module and extremely described
Few driver element; And
Underframe, at the place, end of described display panel, it holds described light emitting module and described substrate.
2. display device according to claim 1, wherein said back light unit comprises a plurality of light-emitting blocks, each light-emitting block comprise in described a plurality of light emitting module one of at least,
Wherein at least one distribution is arranged in each layer of described substrate and is connected at least one light-emitting block.
3. display device according to claim 2 is connected to identical distribution comprising all light emitting modules in each light-emitting block.
4. display device according to claim 2, the quantity of the layer of wherein said substrate equals the quantity of described light-emitting block.
5. display device according to claim 2 wherein provides a plurality of driver elements identical with the quantity of described light-emitting block to drive described light-emitting block respectively.
6. display device according to claim 2, wherein said a plurality of light-emitting blocks are driven simultaneously by a driver element.
7. display device according to claim 1, wherein said back light unit comprises a plurality of light-emitting blocks, each light-emitting block comprise in described a plurality of light emitting module one of at least, and
The quantity of wherein said light-emitting block is corresponding to the quantity of described driver element, and the quantity of the layer of described substrate is less than or equals the quantity of described driver element.
8. display device according to claim 1, described a plurality of layers of wherein said substrate are connected to each other by at least one via hole.
9. display device according to claim 5, wherein said a plurality of driver elements drive described light emitting module with different luminance levels.
10. display device according to claim 1, each of wherein said a plurality of light emitting modules comprises at least one light emitting diode, and described light emitting module is along the edge setting of the described underframe of locating in the end of described display panel.
11. a back lighting device comprises:
A plurality of light emitting modules;
At least one driver element drives described a plurality of light emitting module independently;
Substrate comprise that a plurality of layer, wherein said light emitting module are arranged on the top layer in described a plurality of layer, and many distributions penetrates described a plurality of layer to be electrically connected described a plurality of light emitting module and described at least one driver element; And
Underframe, at the place, end of display panel, it holds described light emitting module and described substrate.
12. back lighting device according to claim 11 comprises a plurality of light-emitting blocks, each light-emitting block comprises at least one light emitting module,
Wherein at least one distribution be arranged in described substrate each the layer in to be connected at least one light-emitting block.
13. back lighting device according to claim 12 is connected to identical distribution comprising all light emitting modules in each light-emitting block.
14. back lighting device according to claim 12, the quantity of the layer of wherein said substrate equals the quantity of described light-emitting block.
15. back lighting device according to claim 12 wherein provides a plurality of driver elements identical with the quantity of described light-emitting block to drive described light-emitting block respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100000887A KR101596791B1 (en) | 2010-01-06 | 2010-01-06 | Backlight apparatus and display apparatus including the same |
| KR887/10 | 2010-01-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102141702A true CN102141702A (en) | 2011-08-03 |
| CN102141702B CN102141702B (en) | 2016-03-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110001857.1A Expired - Fee Related CN102141702B (en) | 2010-01-06 | 2011-01-06 | Back lighting device and comprise the display device of this back lighting device |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US8562197B2 (en) |
| EP (1) | EP2357637B1 (en) |
| KR (1) | KR101596791B1 (en) |
| CN (1) | CN102141702B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101596791B1 (en) * | 2010-01-06 | 2016-02-23 | 삼성전자주식회사 | Backlight apparatus and display apparatus including the same |
| JP5754196B2 (en) * | 2011-03-23 | 2015-07-29 | ソニー株式会社 | Illumination device and display device |
| KR102193765B1 (en) * | 2013-02-28 | 2020-12-22 | 삼성전자주식회사 | Display apparatus |
| KR102494031B1 (en) | 2015-08-20 | 2023-02-01 | 삼성디스플레이 주식회사 | Liquid crystal display device and driving method of the same |
| KR102448040B1 (en) | 2016-04-19 | 2022-09-28 | 삼성디스플레이 주식회사 | Back light unit and display apparatus including the same |
| KR102556829B1 (en) | 2016-06-29 | 2023-07-19 | 삼성디스플레이 주식회사 | Display panel having touch functuion and display apparatus including thereof |
| KR102382506B1 (en) * | 2017-10-24 | 2022-04-05 | 삼성전자주식회사 | Display apparatus |
| US11934064B2 (en) | 2022-03-29 | 2024-03-19 | Samsung Electronics Co., Ltd. | Display apparatus and light source apparatus thereof |
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2010
- 2010-01-06 KR KR1020100000887A patent/KR101596791B1/en active IP Right Grant
- 2010-12-06 US US12/960,890 patent/US8562197B2/en active Active
- 2010-12-22 EP EP10196370.0A patent/EP2357637B1/en not_active Not-in-force
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2011
- 2011-01-06 CN CN201110001857.1A patent/CN102141702B/en not_active Expired - Fee Related
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| CN101061762A (en) * | 2004-11-19 | 2007-10-24 | 松下电器产业株式会社 | Multilayer substrate with built-in capacitor, method for manufacturing same, and cold cathode tube lighting device |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2357637B1 (en) | 2015-06-17 |
| US20130342788A1 (en) | 2013-12-26 |
| EP2357637A2 (en) | 2011-08-17 |
| KR20110080580A (en) | 2011-07-13 |
| CN102141702B (en) | 2016-03-23 |
| US9207490B2 (en) | 2015-12-08 |
| KR101596791B1 (en) | 2016-02-23 |
| US8562197B2 (en) | 2013-10-22 |
| EP2357637A3 (en) | 2011-11-09 |
| US20110164401A1 (en) | 2011-07-07 |
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